Yonesy Núñez

Yonesy Núñez is a member of the Advisory Board of Cytactic, an appointment announced in January 2026.

Career path

Núñez began his cybersecurity leadership track as Chief Information Security Officer at Pall Corporation, where he introduced the company's first holistic global information security, IT governance, and compliance programs. He later served as Chief Information Security Officer at The New School and as Practice Leader for PwC's Philly Metro IT Risk & Security Assurance Practice. He then became Group Information Security Officer for Citi's Corporate Center Businesses, aligning information security risk management with business objectives. From there he moved to Wells Fargo as Cybersecurity Technology Executive for Commercial, Corporate and Investment Banking, Wealth & Investment Management, and International Relations. Núñez joined Jack Henry & Associates as Chief Information Security Officer, responsible for aligning business and information security and for protecting the company's data, client information, and associated assets. He subsequently became Chief Information Security Officer at the Depository Trust & Clearing Corporation (DTCC), leading the firm's Information Security and Technology Risk Management efforts as it advanced its modernization strategy. He was later promoted to Managing Director and Chief Cybersecurity Risk Officer at DTCC, reporting into the Group Chief Risk Office, where he led global cybersecurity and established 24/7 Cyber Threat Fusion Centers across critical market infrastructure.

Boards, advisory work and recognition

Núñez is described as a five-time Chief Information Security Officer, having held senior roles at DTCC, Jack Henry & Associates, Wells Fargo, Citi, PwC, and Pall Corporation. He serves on the Boards of Directors of Pentegra Retirement Services, Chain Bridge Bancorp, and Chain Bridge Bank N.A., and on the STEM Advisory Board for Mercy College and the Hispanic Security Executive Council (Hi-SEC). He is also a member of the Latino Corporate Directors Association and the Black Board Initiative, and is President Emeritus and co-founder of the InfraGard Chapter of Long Island, New York. Earlier in his career he chaired a Risk Management Committee and served on the Board of Trustees for the Darrow School, and on the Strategic Advisory Board of the International Consortium of Minority Cybersecurity Professionals. He has been named to the Hispanic IT Executives Council's list of the Top 100 Most Influential Hispanic Leaders in Technology.
Núñez holds a Doctorate in Computing from Pace University, a Master of Science in Information Systems Engineering from the NYU Tandon School of Engineering, and a Bachelor of Science in Finance and Computer Information Systems from Manhattan College, along with certifications including CISSP, CISM, CISA, and CGEIT.

On joining the Cytactic Advisory Board, Núñez said, "I'm honored to join the Advisory Board and contribute to building tools and strategies that empower security leaders to stay ahead of escalating threats with AI-enabled resilience." Cytactic's chief executive said Núñez's experience as a five-time CISO and his leadership in AI-forward security strategy would help organizations shift from reactive response toward disciplined, proactive cyber crisis management.